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NTSB Cites Pilot Error in SpaceShipTwo Crash Report

SpaceShipTwo Virgin Galactic
Gemini Sparkle

Key Takeaways:

  • The NTSB concluded that Virgin Galactic's SpaceShipTwo disintegrated due to premature unlocking of the feather system by the co-pilot, Michael Alsbury.
  • Alsbury's action was attributed to time pressure and unusual flight conditions.
  • The NTSB criticized Scaled Composites for failing to account for the possibility of a single human error leading to catastrophic failure.
  • Pilot Pete Siebold survived the accident but suffered significant injuries.
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The National Transportation Safety Board has concluded its investigation into the fatal accident involving Virgin Galactic’s SpaceShipTwo. The space ship disintegrated during a test flight on October 31, 2014, resulting in the death of copilot Michael Alsbury.

The NTSB concluded that Scaled Composites, the contractor for the program, failed to “consider and protect against the possibility that a single human error could result in a catastrophic hazard to the SpaceShipTwo vehicle.” The NTSB found that Alsbury prematurely unlocked the feather system “as a result of time pressure and vibration and loads that he had not recently experienced.” This lead to an un-commanded feather extension that ultimately caused the in-flight breakup.

Pia Bergqvist

Pia Bergqvist joined FLYING in December 2010. A passionate aviator, Pia started flying in 1999 and quickly obtained her single- and multi-engine commercial, instrument and instructor ratings. After a decade of working in general aviation, Pia has accumulated almost 3,000 hours of flight time in nearly 40 different types of aircraft.

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